nextword
#define NEXTWORD(c, flag, p, dstlist) p = nextword(c, flag, p, dstlist)
while ((w = nextword(fp)) != NULL) {
while ((w = nextword(dictfp)) != NULL) {
while ((w = nextword(dictfp)) != NULL) {
char *nextword(FILE *);
char *nextword(FILE *, char *, int *, int *);
while (nextword(stdin, buf, &clen, &rlen) != NULL) {
char *nextword(char *, char *);
cp = nextword(cp, word);
cp = nextword(cp, word);
cp = nextword(cp, word);